Fushi no Gunzei wo Hikiiru Bocchi Shiryoujutsushi, Tenshoku shite SSS-Rank Boukensha ni Naru.

"The ultimate ambition of the most formidable necromancer... is to make friends?!"

In the eleventh hour of the Saldia Empire's impending defeat, salvation arrives in the form of Rogue, a lone necromancer. Armed with immense power and leading legendary aides, his solitary goal is to forge friendships. Employing the abilities of Kalfa, the most distinguished appraiser, he masks his loathed profession in that of an "adventurer." Rogue steps into the world as a rookie adventurer, but his extraordinary power can't be completely hidden, sparking rumors that gradually trigger a grand disturbance in the kingdom. Embark on a fresh adventure with this lone necromancer!

(Source: Starts Shuppan, translated)